The Squarebody K10/K20 is a popular truck to lift, and there are several options depending on your goals — mild street lift, serious off-road clearance, or a full suspension overhaul. Here’s what fits and what to know before you buy.
Lift Options Overview
1. Body Lift (1" to 3")
Raises the body off the frame using spacer blocks under the body mounts. The cheapest option.
Pros: Inexpensive ($100–$200), no geometry changes, allows slightly larger tires
Cons: Creates a gap between body and frame, doesn’t improve suspension travel, not ideal for off-road use
Best for: 2WD or mild 4WD trucks just needing a little tire clearance
2. Leveling / Spacer Lift (1"–2.5")
Small spacers added to the front coil springs (C10) or torsion bar adjuster (K10 does not have coil fronts — K10 uses leaf front, so shackle flip/add-a-leaf instead).
Squarebody front suspension:
- C10 (2WD): Coil springs up front — can add coil spacers
- K10/K20 (4WD): Leaf spring solid front axle — leveling via longer shackles or add-a-leaf
3. Suspension Lift (3"–6")
Proper lift kits use longer shackles, add-a-leaf packs, drop brackets, and longer shocks to lift the truck while maintaining geometry.
3"–4" kits: Most popular for Squarebody K10/K20. Superlift 4" Block & Shackle Kit for K10/K20 is a proven bolt-on option — includes rear blocks, front shackles, and u-bolts.
5"–6" kits: Require longer control arms or axle radius arms on some years. Typically need extended brake lines as well.
4. Solid Axle Swap / Full Custom
Replacing the front axle with a D60 or 14-bolt swap. This is a fabrication-level build, not a kit install.
Tire Sizing by Lift Amount
| Lift Amount | Max Tire (No Trimming) | Max Tire (Minor Trimming) |
|---|---|---|
| Stock | 31" | 33" |
| 2" body lift | 33" | 35" |
| 4" suspension lift | 35" | 37" |
| 6" suspension lift | 37" | 40" |
Things to Know Before You Lift
- Driveshaft angles: Any lift over 3" on a K10/K20 will stress the front driveshaft U-joints — inspect and possibly upgrade to heavy-duty joints
- Brake lines: Long-travel lifts require extended brake lines — don’t skip this
- Alignment: Always get a front-end alignment after any lift. Squarebody solid front axles are adjusted via the drag link and tie rod, not camber bolts
Plan your tire size first, then choose the lift level that gets you there.